Writing-machine.



E. B. mass & J. M. ST-OUGHTON.

WRITING MACHINE.

APPLICATION FILED JUNE 18, 1910.

2 SHEETSSHEBT 1.

Patented Au 2' u l V 0/ 44d E. B. HESS & J. M. STOUGHTON. v

WRITING MACHINE. APILIUATIOH FILED YURI; '18, 1910.

967, 96. Ptented Aug. 23, 1910.

2 SHEETS-SHEET 2.

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GHQ/M Specification of Letters Patent.

Original application filed March 30, 1905, Serial No. 252,818.

1910. Serial'No. 567,567.

WRITIN G-MACHINE.

Patented Aug. 23, 1910. Divided and this application filed June 18,

To all whom it may concern:

Be it know that we, EDWARD B. Hess, of the borough of- Manhattan, formerly of the borough of Brooklyn, city and State of New York, and JOSEPH M. STOUGIITON. of N orwa lk, county formerly of the city of Yonkers, county of lVestchester, and State of New York, citi zens of the United States of America, have invented certain new and useful Improvements in'lVriting-Machines, of which the following is a specification.

This invention relates to the keyboard construction of typewriting machines and this application is a division of our application filed March 30, 1905, Serial Number 252,818. The keyboard construction may be used with type bar actuating devices other than those herein shown.

In the acconipanyin drawings which show so much only of the typewriting machine as will serve to illustrate the invention, Figure l is a vertical longitudinal section; Fig. 2, a bottom plan omitting the platen, type bar segment and type bars, and showing thetype-bar operating links broken away in front of theirpoints of connection with the type-bars; Fig. 3, a detail plan of part of thestepped keyboard late; and Fig. 4,- a vertical transverse section in line 4, 4, through part of the bottom. horizontal key-board plate.

The main frame is shown, inthis instance,

as composed of an open rectangular casting. a provided on the bottom at each slde with two cushion-feet a of rubber or other suitable material. A front strikemachine is shown, of which bis the platen, c the slotted type bar segment; and cl type-bars, two only being shown.

The type-bars extend from' the segment toward the front of. the machine, and, as usual, rest normally upon a segmental-rest e.

The construction of the type-bar segment and pivoting of the bars the'reinmay be of any appropriate character, As shown, d is a pivot rod .or wire common to the entlre series of type-bars. The heel d of each type-bar, below the segment, has connected to it an operating llIlk f which extends under the assemblage of type-bars toward the front of. the machine and is flexibly connected to the rear end of a shorter link of Huron, State of Ohio,

, lnvention whose front end is pivotally connected to a fixed piece it, on the frame. In theconstruction illustrated the joint between the links fig, is made by means of the end of the vertical stem z of a push pin finger piece 2" 1n.the ey-board. The rear end of link f is formed with a hook or eyethat engages 111 an aperture in the heel of the type-bar, such joint permitting, to the required extent, a universal movement. The front end-- of this link is provided with a snap hook j, by means of which it 'is engaged with the aperture nearest the end of the stem 2'. The rear end of the front link '9 is formed with a hook or eye which engages the upper aperture in the finger piece stem 2', and the front end of this link is formed with a snap hook j, that engages an aperture in a lug or car It punched on three sides from the horizontal bottom plate is of the key-board and turned down "at right angles.

m is; the stepped top plate of the keyboard, there being four steps for the four series of finger pieces 1, 2, 3,4, arranged as usual in lines transverse to the machine. There'is, of course, for each type-bar a link f, a link 9, and finger piece and stem. The lugs or ears Vt are arranged in a plane horizontal, or substantially so, in four transverse series corresponding to the transverse rows in the bank of finger pieces. The links 7 will, of course, extend rearwardly at varying angles from the horizontal depending upon the position of the corresponding type bar in the type bar segment. The arrangementof the lugs or fixed pieces or anchor points for the front endsof the front links in a horizontal plane, or substantially so, but in separate transverse rows corresponding with the rows of the fin er pieces, com stitutes one of the leading features of this gether at their adjacent ends or of operating the flexing connections'formed by the links. 7 The arrangement is one that permits of a low key-board, and simple andeconomical because all of the anchor points may be conveniently and chea meta 'All of the parts may be held inthe.

normal position indicated in'Fig.'1 by 105 means of suitably applied springs.

quite irrespective of any particular mode of hingmg the pairs of links tothe construction is ly formed from a single piece of sheet 4 e 9 the machine, but also. allows of manipula- In the present construction Teach f has clamped, or otherwise rigidly attached to it, at a suitable point in'front of the heel ofthe type-bar, a downwardly extending iarm n. The entire series of such arms may e arranged m two transverse rows, those in the front row being preferably made somewhat longer than those in the rear row to afford-proper clearance for all necessary movements. A coiled spring-0 having one end attached tothearm n extends rearwardly and has its rear endo hooked into an aperture in the lower edge of a transverse vertically disposed plate p, the upper edge of which fits in a groove in the transverse rear frame plate and is supported by two adjusting screws p passing loosely through apertures in the plate and work ing in threaded'sockets in the frame plate. By manipulation, of these screws, the tension of the entire series of springs for all the type bars may be simultaneously ad-.

,justed.

g is the universal bar'extending between the rocking pendent arms 9 and actuated as follows: From each arm n, a link extends through the coiled spring 0 and has its rear end formed with a hook of suflicient dimensions that embraces the universal bar, such degree of lost motion being provided as to eflect actuation of the universal bar at the proper-point in the traverse of the'typebars'to the printing point on the platen. This arrangement of springs, the mode of adjusting them, and of the universal bar devices has been shown by experience to be practicable and efficient. Moreover, it is economical in construction and convenient to assemble. As seen in Fig. 3, the apertures 1' in the top plate of the key-board for. the passage of the finger piece stems are formed with lateral enlargements to per mit the passage of lateral pins 77- on the stems, which constitute stops acting against the bottom of the bottom plate is to limit the upward movement of the stems. The

slots'in this bottom' plate 70, through which tion of the stems in assembling. When the stems are in position they occupy the rear ends of the slots in the bottom plate and the stop pinsz' are in rear of the lateral enlargements of such ,slots.

m and slotted bottom plate is is suc as to afi'ord accurate guidance of the upper'andlower portions of the flat finger piece stems.

during their vertical movements.

The type-bar actuating conn'ection- 7, g, hasthe action of a breakin toggle and when the joint between the ad acent ends of the two links is moved downwardly the type-bar is thrown to the printing point with an increasing velocity. The particular angle at which the link 9 extends forward to its fixed anchor point may be varied as desired. The one shown afl'ords highly satisfactory results. i

We claim:

1. In a front strike typewriting machine, a sheet metal keyboard plate, common to a plurality'of keys, having apertures for passage and guidance of finger piece push pins andintegral downward projections formed by punching and bending that constitute fixed pieces for the connection of type'bar operating means.

2. In a front strike typewriting machine, a fiat horizontally disposed sheet metal keyboard plate, common to a plurality of keys,

having .apertures' for passa e and guidance of finger piece push pins an integral downward projections formed by punching and bending that constitute fixed pieces for the connection of type bar operating means.

- 3. A keyboard structure for a typewritin machine, comprising upper and lower fixe plates having correspondingly placed apertures with lateral enlar ements on correspondin having lateral projections thereon, located and guided in said apertures.

4, A keyboard structure for a typewriting machine, comprising upper and lower fixed plates having corresponding slots for the reception and guidance of the upper and lower portions of finger piece push pins and downward projections integral with the lower plate for the connection of type bar operating connections to be actuated by the push pins.

5. A keyboard structure for a typewritin 0 machine, comprising upper and lower fixedplates having correspondingly placed aperspondin sides, combine with push pins, having ateral projections thereon located and guided in said apertures and downward projections integral with the lower plate for the connection of t e bar operating connections to be actuated by the push pins.

6. A keyboard structure for a typewritin machine, comprising'upper and lower fixed keyboard plates having correspondingapertures for the reception and guidance of finger piece push'pins, the apertures in the lower late being of greater dimensions fore and aft of the machine than those in'the sides, combined with push pins,-

tures with lateral enlar ements on come upper plate for the purpose of allowing angular displacement of the push pins during their vertical movements and-downward projections integral with the lower plate for the connection of type bar operating connections to be actuated by the push pins.

8. A keyboard structure for 'a .typewriting machine, comprising upper and lower fixed plates having corresponding apertures with lateral enlargements on corresponding sidesthe apertures in, the lower plate being of greater dimensions fore and aft of the inachine than those in the upper plate, combined with push pins, having lateral projections, located and guided in said apertures. 9. In a front strike 'typewriting machine, a sheet metal keyboard plate, common to a plurality ofkeys, having apertures for passage and guldance of finger piece push pins and integral downward projections formed by punching and bending w ose lower ends lie in substantiallythe same horizontal plane and that constitute fixed pieces for the connection of type bar operating means.

10. In a front strike typewriting machine, a flat horizontally disposed sheet metal keyboard plate, common to a plurality of k" IS, having apertures for passage and guidance of finger piece pu'sh'pins and integral downward projections formed by punching and bending whose lower ends lie in substantially the same horizontal plane and that constitute fixed pieces for the connection of'type bar operating means. i I

In testimony whereof, we have hereunto A subscribed our names.

EDWARD B. HESS. JOSEPH M; STOUGHTON. Witnesses (for Hess):

C. MYERS, A. J. SHERIDAN. Witnesses (for Stoughton) KENT H; Woonw'nno, LILLm SARGENT.. 

